Carpet sweeper



March 29, 1938. c. c. PARRISH CARPET SWEEPER Original Filed June 29,1936 lllrm INVENTORI. V (76%! Cfi rM'a/i /v-od v ATTORNEYJ.

I i I I I glia itklg'g q TW ABPET E R I QQCarllC- Parrish, g shel lesrlnd-fl s ei wtni V, Porter Steel Specialties, a partnership consist,- V

ing of Enos Porter and Hst'er Porter F uller, Shelbyvill'c', Ind apartnership of Indiana: Application June 29, 1936;Serial'No'; 87,871: :alt'enewed February;.116, 1938 L Y efolaihls r (:15.141)

My invention relates to'imp-rovementsin' carpet sweepers andhasforoneofits objects that of mounting the brush of the carpet sweeper sothat thevsame may be readily removed for cleaning,

adjustmentand renewal, and-'sonthat .zthe. sam

may be readily adjusted .as to heights, 2

-'Another object of. my invention is to provide a improved mountingfonthe rollers or whee'ls of; the sweeperv to permit-1lateraladjustmentof'the;

1'6 wheels by a simple and'economic'al means. I I 7 The presentapplication isca continuation, in part, of my. applicationfiled;March:;14,@:1936, Serial No. 68,834, for 'so'much. asiis disclosedin.

said application;

LI i r5- F'onthe purpose of disclosing my inventionyl have illustratedmy certain embodiments thereof in the accompanying drawing, 'inywhich: Ia Fig. ,1 isia perspective view of a carpet sweeper embodyingmyinvention, i I a Fig. 2 is an end elevation,;partlylin section,showingthe mounting forthe'brush; z A .Fig. 3 is a sectional viewtak'en; ontheline'i'l,v 3"

0fFig.2,;% i his a .view 'similar-torFig. 3. showing a '5 modificationof'my invention,

Fig. 5 isa detail; end elevationof adjusting'means,'and s 1 Fig. 6 is adetail.end 'elevatiom ipartly invs'ec-v tion, showingthe wheelror rollermountingsnu:

v In the embodiment illustrated, the sweepertis provided with the usualhousing l, at-each'end ofv which is mounted a plate.i2, onpwhich;isca'rriedl the; brush driving wheels :3 andtheirxassociatedr' mechanism.z-As all ofthe wheels aretmountedlini the same manner a description ofthe mountingofi one will be sufficient. 1 3::

The end plate 2, which is practically formedaof:

metal, base vertical slot 4 formed therein and a P rtion of the metal isstruckupatthispointtol. form an outwardly projecting, pocket 5,1 closedon" three sides and open only, at the. slotted point; At a pointhorizontally spacedufrom the pocket! the'metal of the plate isprovidedwith two slits-6r; and I andth'e metal betweentheseslitsisstruck up to form a strap or pocket-member-8; Asup-- porting b'ar,preferably formed of sheet metal such as 9, is provided with a wheelspindle H! which extends laterally therefrom. This bar or supportingmember has one end engaging within the pocket 5 and the other engagingin the strap 8. In assembly, the parts being assembled before the plate2 is placed in position, one end of the bar 9 is passed through thestrap 8. Due to the fact that this strap is open at both ends the barcan be passed a sufiicient distance through to permit the the an?opposite end to be iinsertediunder fthey pocket The supporting bar 9 isprovided with a lugor :;teat;

I I whichwhen theparts are assembled; is engaged by a pressure springIFlhis';;=.spring tendsuto force the wheel, inv engagingx directionjwithyithei 5E roller of the brush; Wheni-lthezpartsgarenasseme"bled the diameter of stheiwheeli ii is 'such; thatathe. sidewalls of thehousingwould prevent a lateral movement of the support 9 disengagingvtheendvof the support fromthe pocket;5.f;.-" l '1 1 ,5 w

A housing I3 is. securedtothe: e.ndlqf.- the $38151 g, enclosing thewheels and their mounting .andgthisi: housing also provides asupport-base for, the brush. Thebrush is of the 'us'ualconstructionand-has arranged at each end a: rollergrlll, which is,;;a'dapt ed= to beengaged; when. the brush is in'zpositiongby; the wheels 3 andcausedto';rotate-.,as:the.rwheels; are rolled on. the carpetsa'lowthisend,aeach, ends. plate is provided ;with ahvertical aslotjj; l5 10:30.1;commodate the brush spindle. I'hebrushspindle; at-each end'receives abearing :pin which-is mount-1 ed on a substantially iflat prectanglebase; l 6 and. this :base isslidably mountediinia guide comprise-a ing aplate 'I 'Lrivetedtoi the inne'riace ofqtheiouterl wall of the housingI3. ,EIhisplate;has;a;vertical slot such as I 8formedlthereinandthewallsot the plate adj acent said slot are struck:up; so; that they may be spaced apartlfrom the wall of, the housing;The bearinglpin base lfirfitszwithin thisjguideiwith, the: bearing 20project ng: inwardly therefrom. By this construction the-:bearingyspindles of: ,;the-; brush while being horizontally stationarymay have avertical movement, 1

;- Controlling the vertical movementpand ad usting the same, I provideat eachendl-angadjustingp g lever 2i. This levergcomprisesga stripofgjflat sheet :metal having one; end-:bifurcated togfgorm; a;

greater length: than the arm 22:; These bifurcated;

arms, embrace the ,spindleslll pfthe-brush. lever is mounted on ap votipp sec red inane: end wall I3 and extending,inwardly and thepp I ing forreceiving this;pin comprises a slot 1, the. lever so that-thelevenmayghavea certain; amount of lateral movement; -;The'OQPOSllJE'fil'lQ-Q of the lev r i eiv n nc utward:hendrasat; Hand; thenis continued to form a projection 26 termi hating in a handle portion 21and extending through a slot 28 in the side wall of the housing I3. Thisslot is provided with a series of rack teeth 29, spaced apart to formstops for the outer end of the lever. Due to the elongated slot 24 alateral movement of the lever 2| is permitted andthis slot is ofsufiicient length to permit the lever 2| to be moved transversely on thepin a suificient distance to permit the arm 22 to clear the bearing pin20 of the brush thereby permitting the brush to be vertically removedfrom the casing. However, due to the offset portion 25 of the lever anddue to the fact that this oil'set portion is so spaced from the end wallof the housing, the lever cannot be, under normal oircumstances, moved asuflicient distance laterally to release the brush.

This can only be done when the lever is swung ing a housing providedwith end walls, comprising a supporting lever having bifurcated arms atoutwardly far enough to permit the offset portion to pass through theslot 28 and it will be noted that the slot 28 is sufllciently wide topermit this oflset portion to move therethr'ough. Due to the fact thatthe arm 22' is longer than the arm 22 even when the lever 2| is moved toclear thetarm it will drop down on the arm 22 and cannot drop past thelever. This insures the brush being reinserted in the same position aswhen removed and also facilitates'the insertion of the brush inposition.

In'the structure illustrated in Fig. 4, the construction issubstantially'the same as that illustrated' in Fig. 2 with theexceptionthat lever 2| is provided with bifurcated arms 22 and 22' ofequal length. This construction is somewhat cheaper than thatillustrated in Fig. 2. It does, however, provide the laterallydisplaceable lever arm having an end slot or apair of arms embracingthepivot member of the brush as shown in Flg.2. 1

I claimfas my invention:

1. A carpet sweeper comprising a casing having end walls, a brushspindle mounted in said casing and extending through slots in said endwalls, brush driving wheels for said spindle mounted on said end walls,a housing for said wheels secured on said end walls and having end andside walls and a mounting for said brush spindle secured to the end wallof each housing comprising a lever having a spindle receiving'notch atits inner end embracing said spindle, a pivot on the end wall of saidhousing on which said'lever is pivotally and slidably mounted, a slot insaid walls of said housin-g having rack teethon one wall thereof, oneend of said leverprojecting through said slot and engaging said teeth tomaintain the lever in any of its adjustable positions, and a stop onsaid lever adapted to normally abut said end wall of said housing toprevent lateral displacement of said lever. t 3

2. A carpet sweeper comprising a casing havingend walls, a brush spindlemounted in said casing and extending through said end walls, brushdriving wheelsfor said spindle mounted on said end walls, a housing forsaid wheels secured to each of said end walls, having end and side wallsand a mounting for said brush spindle secured to the end walls of saidhousing comprising a lever having a spindle receiving notch at its innerend embracing said spindle and an elongated slot therein, a headed pivotpin on said housing end wall'extending through said slot and having itshead bearing on said lever to provide a pivotal and sliding mounting forsaid lever, a slot in the side wall of said housing having rack teeth onone wall thereof, one end of said lever being offset to form a shoulderand projecting through said slot and adapted to engage by the elasticityof the lever with said rack teeth, said shoulder forming an abutmentmember to formally engage the side wall of the housing and preventlateral displacement of the lever.

3. A brush mounting for carpet sweepers havone end thereof spaced apartto receive the brush spindle therebetween, one of said arms being ofgreater length than the other, a pivot for said lever mounted on an endwall of the carpet sweeper housing, said lever having an elongated slottherein extending longitudinally of the lever and receiving said pivotto permit longitudinal movement of the arm on the pivot, and rack teethon a portion of the carpet sweeper housing adapted to beengaged by theend of said lever for maintaining the same in any adjusted position. 1

4. A brush mounting for carpet sweepers having a housing provided withend walls, comprising a lever having a bifurcated end to receive a brushspindle between the arms thereof, the upper of the bifurcated arms beinglonger than the lower arm, said lever having .a longitudinally extendingelongated slot formed therein, a pivot pin extending through said slot,the housing of the sweeper having in an end wall thereof an openingprovided with rack teeth onv one of the side walls thereof, the free endof the lever having an offset portion adapted to extend through saidopening and the offset providing an abutment to normally engage theportion of the housing to prevent transverse displacement of the lever asuflicient distance to disengage said bifurcated arms from said spindle.

5. A brush mounting for carpet sweepers having a housing provided withend walls, comprising a lever having a bifurcated end, a pivot for saidlever, an elongated slot in said lever extending longitudinally of saidlever for receiving said pivot to permit transverse movement ofthe'lever on said pivot, the free end of said lever having a portionextending at right angles thereto and a handle portion projecting fromsaid bent portion and extending substantially parallel with the lever,said sweeper housing having an opening therein of suilicient width topermit the passing therethrough of said bent portion and having rackteeth on one of the side walls thereof.

6. A mounting for carpet sweeper wheels comprising a sheet metal platehaving a struck up pocket formed therein with one end open and astruckup strap formed on said end plate, a spindle supporting bar having oneend extended into said pocket and the opposite end passing beneath saidstrap, the end entering the pocket being narrower than the width of thepocket to pennit a vertical movement thereof, and a spindle for thesweeper wheel mounted on said bar.

CARL C. PARRISH.

